Opened 7 months ago

Closed 7 months ago

#7032 closed defect (duplicate)

defect: mpc8: audible blip at end of some tracks

Reported by: smithjd15 Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:

Decoding mpc8 files with ffmpeg introduces an audible blip at the end of some files that is not present when decoded with the mpcdec decoder.

How to reproduce:

ffmpeg -i <some-sv8-file>.mpc -format wav <some-sv8-file>.wav

Open the resulting file in a media player or look at the end of the track in an audio editing application to see the visible blip.

Using the samples from https://trac.ffmpeg.org/ticket/6046 (qx.mpc) of a waveform the blip is clearly visible and somewhat audible after converting the samples to .wav files.

ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.8 (SUSE Linux)

Attachments (3)

q1.png (36.9 KB) - added by smithjd15 7 months ago.
End of q1.mpc waveform
q5.png (35.7 KB) - added by smithjd15 7 months ago.
End of q5.mpc waveform
q10.png (37.3 KB) - added by smithjd15 7 months ago.
End of q10.mpc waveform

Download all attachments as: .zip

Change History (4)

Changed 7 months ago by smithjd15

End of q1.mpc waveform

Changed 7 months ago by smithjd15

End of q5.mpc waveform

Changed 7 months ago by smithjd15

End of q10.mpc waveform

comment:1 Changed 7 months ago by cehoyos

  • Component changed from avcodec to undetermined
  • Resolution set to duplicate
  • Status changed from new to closed
  • Version changed from 3.3.6 to unspecified

For future tickets: Please remember to always test current FFmpeg git head and always provide the ffmpeg command line you tested together with the complete, uncut console output for valid tickets.

I suggest we revisit this ticket once #6046 is fixed.

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